X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fopenwrt.git;a=blobdiff_plain;f=target%2Flinux%2Fipq806x%2Fpatches-4.19%2F0031-mtd-add-SMEM-parser-for-QCOM-platforms.patch;fp=target%2Flinux%2Fipq806x%2Fpatches-4.19%2F0031-mtd-add-SMEM-parser-for-QCOM-platforms.patch;h=0000000000000000000000000000000000000000;hp=a7e95513fdc2840876f8d06a1715d75c4ea3bc54;hb=29ca10e537ee807283cfd8a58817270d233a021d;hpb=a7afeb31421bd6810c903468b23734baa6999438 diff --git a/target/linux/ipq806x/patches-4.19/0031-mtd-add-SMEM-parser-for-QCOM-platforms.patch b/target/linux/ipq806x/patches-4.19/0031-mtd-add-SMEM-parser-for-QCOM-platforms.patch deleted file mode 100644 index a7e95513fd..0000000000 --- a/target/linux/ipq806x/patches-4.19/0031-mtd-add-SMEM-parser-for-QCOM-platforms.patch +++ /dev/null @@ -1,282 +0,0 @@ -From d8eeb4de90e968ba32d956728c866f20752cf2c3 Mon Sep 17 00:00:00 2001 -From: Mathieu Olivari -Date: Thu, 9 Mar 2017 08:18:08 +0100 -Subject: [PATCH 31/69] mtd: add SMEM parser for QCOM platforms - -On QCOM platforms using MTD devices storage (such as IPQ806x), SMEM is -used to store partition layout. This new parser can now be used to read -SMEM and use it to register an MTD layout according to its content. - -Signed-off-by: Mathieu Olivari -Signed-off-by: Ram Chandra Jangir ---- - drivers/mtd/Kconfig | 7 ++ - drivers/mtd/Makefile | 1 + - drivers/mtd/qcom_smem_part.c | 228 +++++++++++++++++++++++++++++++++++++++++++ - 3 files changed, 236 insertions(+) - create mode 100644 drivers/mtd/qcom_smem_part.c - ---- a/drivers/mtd/Kconfig -+++ b/drivers/mtd/Kconfig -@@ -193,6 +193,13 @@ config MTD_MYLOADER_PARTS - You will still need the parsing functions to be called by the driver - for your particular device. It won't happen automatically. - -+config MTD_QCOM_SMEM_PARTS -+ tristate "QCOM SMEM partitioning support" -+ depends on QCOM_SMEM -+ help -+ This provides partitions parser for QCOM devices using SMEM -+ such as IPQ806x. -+ - comment "User Modules And Translation Layers" - - # ---- /dev/null -+++ b/drivers/mtd/qcom_smem_part.c -@@ -0,0 +1,235 @@ -+/* -+ * Copyright (c) 2015, The Linux Foundation. All rights reserved. -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 and -+ * only version 2 as published by the Free Software Foundation. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ */ -+ -+#include -+#include -+#include -+ -+#include -+#include -+#include -+#include -+ -+#include -+ -+/* Processor/host identifier for the application processor */ -+#define SMEM_HOST_APPS 0 -+ -+/* SMEM items index */ -+#define SMEM_AARM_PARTITION_TABLE 9 -+#define SMEM_BOOT_FLASH_TYPE 421 -+#define SMEM_BOOT_FLASH_BLOCK_SIZE 424 -+ -+/* SMEM Flash types */ -+#define SMEM_FLASH_NAND 2 -+#define SMEM_FLASH_SPI 6 -+ -+#define SMEM_PART_NAME_SZ 16 -+#define SMEM_PARTS_MAX 32 -+ -+struct smem_partition { -+ char name[SMEM_PART_NAME_SZ]; -+ __le32 start; -+ __le32 size; -+ __le32 attr; -+}; -+ -+struct smem_partition_table { -+ u8 magic[8]; -+ __le32 version; -+ __le32 len; -+ struct smem_partition parts[SMEM_PARTS_MAX]; -+}; -+ -+/* SMEM Magic values in partition table */ -+static const u8 SMEM_PTABLE_MAGIC[] = { -+ 0xaa, 0x73, 0xee, 0x55, -+ 0xdb, 0xbd, 0x5e, 0xe3, -+}; -+ -+static int qcom_smem_get_flash_blksz(u64 **smem_blksz) -+{ -+ size_t size; -+ -+ *smem_blksz = qcom_smem_get(SMEM_HOST_APPS, SMEM_BOOT_FLASH_BLOCK_SIZE, -+ &size); -+ -+ if (IS_ERR(*smem_blksz)) { -+ pr_err("Unable to read flash blksz from SMEM\n"); -+ return -ENOENT; -+ } -+ -+ if (size != sizeof(**smem_blksz)) { -+ pr_err("Invalid flash blksz size in SMEM\n"); -+ return -EINVAL; -+ } -+ -+ return 0; -+} -+ -+static int qcom_smem_get_flash_type(u64 **smem_flash_type) -+{ -+ size_t size; -+ -+ *smem_flash_type = qcom_smem_get(SMEM_HOST_APPS, SMEM_BOOT_FLASH_TYPE, -+ &size); -+ -+ if (IS_ERR(*smem_flash_type)) { -+ pr_err("Unable to read flash type from SMEM\n"); -+ return -ENOENT; -+ } -+ -+ if (size != sizeof(**smem_flash_type)) { -+ pr_err("Invalid flash type size in SMEM\n"); -+ return -EINVAL; -+ } -+ -+ return 0; -+} -+ -+static int qcom_smem_get_flash_partitions(struct smem_partition_table **pparts) -+{ -+ size_t size; -+ -+ *pparts = qcom_smem_get(SMEM_HOST_APPS, SMEM_AARM_PARTITION_TABLE, -+ &size); -+ -+ if (IS_ERR(*pparts)) { -+ pr_err("Unable to read partition table from SMEM\n"); -+ return -ENOENT; -+ } -+ -+ return 0; -+} -+ -+static int of_dev_node_match(struct device *dev, void *data) -+{ -+ return dev->of_node == data; -+} -+ -+static bool is_spi_device(struct device_node *np) -+{ -+ struct device *dev; -+ -+ dev = bus_find_device(&spi_bus_type, NULL, np, of_dev_node_match); -+ if (!dev) -+ return false; -+ -+ put_device(dev); -+ return true; -+} -+ -+static int parse_qcom_smem_partitions(struct mtd_info *master, -+ const struct mtd_partition **pparts, -+ struct mtd_part_parser_data *data) -+{ -+ struct smem_partition_table *smem_parts; -+ u64 *smem_flash_type, *smem_blksz; -+ struct mtd_partition *mtd_parts; -+ struct device_node *of_node = master->dev.of_node; -+ int i, ret; -+ -+ /* -+ * SMEM will only store the partition table of the boot device. -+ * If this is not the boot device, do not return any partition. -+ */ -+ ret = qcom_smem_get_flash_type(&smem_flash_type); -+ if (ret < 0) -+ return ret; -+ -+ if ((*smem_flash_type == SMEM_FLASH_NAND && !mtd_type_is_nand(master)) -+ || (*smem_flash_type == SMEM_FLASH_SPI && !is_spi_device(of_node))) -+ return 0; -+ -+ /* -+ * Just for sanity purpose, make sure the block size in SMEM matches the -+ * block size of the MTD device -+ */ -+ ret = qcom_smem_get_flash_blksz(&smem_blksz); -+ if (ret < 0) -+ return ret; -+ -+ if (*smem_blksz != master->erasesize) { -+ pr_err("SMEM block size differs from MTD block size\n"); -+ return -EINVAL; -+ } -+ -+ /* Get partition pointer from SMEM */ -+ ret = qcom_smem_get_flash_partitions(&smem_parts); -+ if (ret < 0) -+ return ret; -+ -+ if (memcmp(SMEM_PTABLE_MAGIC, smem_parts->magic, -+ sizeof(SMEM_PTABLE_MAGIC))) { -+ pr_err("SMEM partition magic invalid\n"); -+ return -EINVAL; -+ } -+ -+ /* Allocate and populate the mtd structures */ -+ mtd_parts = kcalloc(le32_to_cpu(smem_parts->len), sizeof(*mtd_parts), -+ GFP_KERNEL); -+ if (!mtd_parts) -+ return -ENOMEM; -+ -+ for (i = 0; i < smem_parts->len; i++) { -+ struct smem_partition *s_part = &smem_parts->parts[i]; -+ struct mtd_partition *m_part = &mtd_parts[i]; -+ -+ m_part->name = s_part->name; -+ m_part->size = le32_to_cpu(s_part->size) * (*smem_blksz); -+ m_part->offset = le32_to_cpu(s_part->start) * (*smem_blksz); -+ -+ /* -+ * The last SMEM partition may have its size marked as -+ * something like 0xffffffff, which means "until the end of the -+ * flash device". In this case, truncate it. -+ */ -+ if (m_part->offset + m_part->size > master->size) -+ m_part->size = master->size - m_part->offset; -+ } -+ -+ *pparts = mtd_parts; -+ -+ return smem_parts->len; -+} -+ -+static const struct of_device_id qcom_smem_of_match_table[] = { -+ { .compatible = "qcom,smem" }, -+ {}, -+}; -+MODULE_DEVICE_TABLE(of, qcom_smem_of_match_table); -+ -+static struct mtd_part_parser qcom_smem_parser = { -+ .owner = THIS_MODULE, -+ .parse_fn = parse_qcom_smem_partitions, -+ .name = "qcom-smem", -+ .of_match_table = qcom_smem_of_match_table, -+}; -+ -+static int __init qcom_smem_parser_init(void) -+{ -+ register_mtd_parser(&qcom_smem_parser); -+ return 0; -+} -+ -+static void __exit qcom_smem_parser_exit(void) -+{ -+ deregister_mtd_parser(&qcom_smem_parser); -+} -+ -+module_init(qcom_smem_parser_init); -+module_exit(qcom_smem_parser_exit); -+ -+MODULE_LICENSE("GPL"); -+MODULE_AUTHOR("Mathieu Olivari "); -+MODULE_DESCRIPTION("Parsing code for SMEM based partition tables"); ---- a/drivers/mtd/Makefile -+++ b/drivers/mtd/Makefile -@@ -17,6 +17,7 @@ obj-$(CONFIG_MTD_AR7_PARTS) += ar7part.o - obj-$(CONFIG_MTD_BCM63XX_PARTS) += bcm63xxpart.o - obj-$(CONFIG_MTD_BCM47XX_PARTS) += bcm47xxpart.o - obj-$(CONFIG_MTD_MYLOADER_PARTS) += myloader.o -+obj-$(CONFIG_MTD_QCOM_SMEM_PARTS) += qcom_smem_part.o - obj-y += parsers/ - - # 'Users' - code which presents functionality to userspace.